Last updated on December 12th, 2025 at 06:35 pm
B100X – Entertainment Game Review
B100X is a Entertainment/Roleplaying/Strategy game from yujiro komine, first launched in 27th January 2021.
It’s rated 12+ and currently has 213+ ratings on the App Store.
What Makes B100X Stand Out
What is B100X?
B100X is an "auto dungeon RPG" that you can easily enjoy during your free time.
This game was created with the concept of "making hack-and-slash accessible to everyone."
With "Full Auto Battle" and "Anything Synthesis System", both easy operation and complicated capture are compatible.
There is also an automatic lap function, so you can enjoy it even during matching of competitive games.
Seal the Eternal Cave
In the world before the birth of mankind, the heavens were dominated by God and the earth was dominated by demons.
The player becomes a "witness" who assists the apostle "Holly" of God, and challenges the seal of the "Eternal Magic Cave", which is a terrifying monster's nest.
What is a demon? What is God's true purpose? What is the relationship between the Holly Apostles and humans?
How to play
- Create play data.
- Choose a dungeon and a target floor and start your adventure!
- The battle is completely automatic.
- Use experience points, junk, and drop items to strengthen Holly!
- Aim for the deepest part of the "Eternal Cave".
Link
There is also a PC/iOS version.
- Official site
https://b100x.nussygame.com/ - Change log
https://b100x-history.tumblr.com/ - User support
https://nussygame.zendesk.com/hc/
This Entertainment game offers engaging gameplay and regular updates for mobile players.
Player Feedback
As a newer release, B100X is building its player community. Early feedback suggests .
Recent Updates & Development
Latest Update: 22nd October 2025
Recent improvements include:
Please read here for detailed informations.
https://trello.com/b/RwxEIzzh/
Download & Availability
B100X is available through the official App Store for iOS devices.
Requirements: Requires iPhone 5s / iPad Air / iPad Air (Cellular) / iPad Mini 2 (Retina) / iPad Mini 2 (Retina, Cellular) / iPhone 6 / iPhone 6 Plus / iPad Air 2 / iPad Air 2 (Cellular) / iPad Mini 3 or later.
Compatible with iPhone and iPad devices.
Player Experience Highlights
Community Insight:
Many games these days try to make themselves a movie or something with no actual good gameplay this stuff actually the actual substance what makes games addictive with no fluff this is no doubt the game to play if you like gameplay.
Just like Nussys other work, B100X champions itself as another great game amongst a sea of mobile games that are clones of one another with little to no innovation. Nussys collection proves that the developer is in tune with what makes a game fun and original. One can only hope that the gaming community collectively rallies around developers like these to support future work. Definitely for gamers who enjoy rogue like games, idle gaming, resource management, RPGs, etc. Has its own charm that does not take long to find and persistently grows on you with its addictive gameplay loop.
This developer is awesome so Im sure the game will only get better.
The bad first. The English translation is very rough at times. You will still mostly understand it, but were talking auto translate levels of composition. Also, the only way youll understand the logic of how difficulty scales is already know the concept of floor bosses. It would have been nice if in the dialogue the mentioned that a boss shows up every set amount of floors. Its possible we missed that but we dont think that info was given. A lot of the mechanics arent explained well, so the player has to figure a lot out on their own. That will probably turn a lot of people off. The good. You really get to create your type of hero by choosing the stats you want keep. The mixing system is very basic, but very effective at letting you make your play style. It also makes the game worth replaying to try different builds. The art and 2D sprites are nice. The music is repetitive but not terrible.
This game gives us nostalgia for an experience we never actually had. We cant quite put it into words but the music, dialogue, gameplay and overall atmosphere of the game is very charming and delightful. This doesn't feel like a mobile game. It feels like Im 10 years old again, playing some classic RPG on Sega or NES. It has that kind of vibe. Ps. We never owned or played video games at that age so Im not sure why it feels so familiar as if we had. But Im really enjoying our time with it. And Holly is a wonderful character who feels genuine (If you pick this up. Take your time in the beginning. It took us about a week to settle into the game and feel comfortable with the UI and various menus. Im glad we didnt give up. We think you will be too.).
Game has a lot more work and effort put into it than we expected. Very impressive, though we really wish the free to play version had more item storage.
We have not been played a game like this.
Holly is really cute and collecting items and leveling up is fun.
This company comes out with good quality and all around genuine fun games. If we had to give a negative, we guess, it would be that we dont really like not having the option to choose a different gender. Other than that game is solid fun.
Menu can be a bit confusing but if youve been playing rpgs or any menu heavy games in general then you should be fine. Story seems to be alright so far but Im not really the person to ask about stories in games. Gameplay is fun and the developer nussygames isnt money hungry like most developers so dont worry about ads or heavy MTX. Ill be playing this game for a long while for sure.
Hey we love your game! You have some serious skill. Keep making games, Ill be a fan for life! This game is a blast and everyone should play it.
The inventory system is awesome, near infinite grinding potential. Really love nussy, when they put a game out you know its going to be quality. Play this, play Buriedbornes, buy something. The dev deserves it.
Combining RPG items is a neat concept Ive never seen before.
Fun game to just play around with. Very addictive ngl. We got it at steam at first and found it was on mobile 9-10.
This game is great after a tiring workout or doing some work on your computer.
This game allows customization in a convenient way and adding all these perks to gear by combining is so entertaining.
Its a decent game nice idle to fill free time there are however some upgrades we would give it… First prices of mixing gear should be lowered slightly so it isnt too monotonous while grinding and the gear slots when mixing shouldnt exactly be limited so someone can make a decent set of armor and weapons… Other than a few other minor tweaks it is a good game. If we see some changes we wouldnt mind switching our rating to 5 stars. Hoping to see what you will do next.
We love how lay back the game is while still having compelling and even story. Love to see how this goes.
We just hope more inventory or for the monthly subscription to be a little bit cheaper. Apart from that we are really enjoying the game and it is fun to leveling up the items on our taste. Thanks for the game-.
Good take on gear combining/growing. Sending holly in the dungeon gets you gear. Gear pieces have traits that buff holly so she can kill more monsters for more gear. For the parts you dont equip, you can combine gear pieces to increase a specific buff, or add tons of status effects onto a frankenstein armor set. Cute premise, nice art and music too, we really like the font and layout of the game in general. Plz add a 'no jiggle' option our mom is watching.
We can say with upmost certainty that this is our new favorite idle game.
We like the gameplay loop, find gear, combine gear, find better overall gear and continue. It just works. Also like the story somewhat.
The Characters are likeable, the graphical difference in gameplay and story actually work well. There are no forced feeling of MTX and the devs arent trying to use any of your data secretly. The item and combination system is fun and overall this is a refreshing take on an idle dungeon crawler 5stars.
The gear system is so dope! Love the idle gameplay take. Will keep playing.
Interesting characters and gear with another new take to the idle genre.
User feedback from Apple App Store
App Details
- Version: 2.2.8
- Size: 599.58 MB
- iOS: 13.0 or later
- Languages: EN
- Content Advisory: Infrequent/Mild Mature/Suggestive Themes, Frequent/Intense Horror/Fear Themes, Infrequent/Mild Alcohol, Tobacco, or Drug Use or References, Infrequent/Mild Profanity or Crude Humor, Infrequent/Mild Cartoon or Fantasy Violence
- Developer: yujiro komine
Last updated: 22nd October 2025 | Genre: Entertainment, Roleplaying | Developer: yujiro komine